Question

1 the study of the relationships between organisms. 2 an electron carrier. 3 coating that covers and protects viral dna/rna. 4 protein that allows h+ to re - enter mitochondrial matrix. 5 sugar regenerated in the krebs cycle. 6 rod - shaped prokaryotes. 7 an original chromosome attached to its copy.

Explanation:

1. Ecology is the study of relationships between organisms.
2. NAD+ (Nicotinamide - adenine dinucleotide) is an electron - carrier in cellular respiration and other metabolic processes.
3. The capsid is the protein coating that covers and protects viral DNA/RNA.
4. ATP synthase is the protein that allows H+ to re - enter the mitochondrial matrix and drives ATP synthesis.
5. Oxaloacetate is the sugar (a 4 - carbon compound) regenerated in the Krebs cycle.
6. Bacilli are rod - shaped prokaryotes.
7. A chromosome attached to its copy is called a sister chromatid.

Answer:

1. Ecology
2. NAD+
3. Capsid
4. ATP synthase
5. Oxaloacetate
6. Bacilli
7. Sister chromatid